Discount stopped treating me like the 20 year repeat customer I was some years ago.
I have since patronized the local Big-O franchised guys and get treated like an adult. I even, at their suggestion because they could not cost effectively source them, bought the last set of truck tires from Discount Online (Tire Rack was a bit more) and had Big-O mount and certificate them. If they are $100 more than Discount I will still use Big-O. They fix flats for free no questions asked, have fixed flats and installed new high pressure valve stems on my trailer tires for free, etc. Of course, they got my business when it was time to replace 5 trailer tires, boat trailer tires, etc.
They can also balance a damn tire and charge less for winter/summer swaps. They also do some decent wrenching and a perfect alignment on my RAM.